Structure of flow with intense bed load layer

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00301956" target="_blank" >RIV/68407700:21110/16:00301956 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Structure of flow with intense bed load layer
Original language description
Experimental results are discussed of steady uniform turbulent open channel flows over inclined granular beds in the upper-stage plane bed regime. The layered structure of the flow is described, the layer interfaces identi-fied, and the flow behavior in the layers evaluated using laboratory measurements including velocity distribu-tion across the flow depth. Special attention is paid to the transport layer through which a vast majority of bed load is transported. It is composed of the collisional part (sediment grains supported by mutual collisions) and the dense part (moving grains in permanent contact). The distribution of velocity is approximately linear in the collisional layer and the position of the origin of the linear profile is sensitive to dimensionless bed shear stress. The local concentration at the bottom of the collisional layer is sensitive to the bed shear stress as well. Above a certain value of the dimensionless bed shear stress, stability of the transport layer seems to be associated with a constant value of Richardson number.
Czech name
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Czech description
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Project
<a href="/en/project/GA16-21421S" target="_blank" >GA16-21421S: Analysis of Granular-Liquid Channel Flows based on Kinetic Theory Approach</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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